Canon MLT (F) Manuel utilisateur

Before using the instrument, be sure to read this manual thoroughly.

Also, read the manuals of other instruments in this system.

Keep the manual where it is easily accessible.

User’s Manual

MLT (F)

CXDI Image Processing Software

Please Note

1. In no event will Canon be liable for direct or indirect consequential damage arising out of the use of this

product. Canon will not be liable for loss of image data due to any reason.

2. Please have this product installed by Canon representative or distributor.

3. Canon reserves the right to change the specifications of the product without prior notice.

Under copyright laws, this manual may not be copied, in whole or in part, without the written consent of

Canon.

Contents

1. Overview ......................................................................................1

1.1 About MLT (F) .......................................................................................1

1.2 Available Functions of MLT (F) .............................................................2

2. Edit Exposure Mode Settings ......................................................3

2.1 Procedures to Edit Exposure Mode .......................................................3

2.2 Setting DWT ENHANCE. Tab ...............................................................7

2.3 Setting DWT DEP Tab ........................................................................10

2.3.1 Setting DWT DEP for High-Density Field .........................................................10

2.3.2 Setting DWT DEP for Low-Density Field .........................................................11

2.4 Setting DWT NOISE R. Tab ................................................................13

3. QA Mode Settings ......................................................................14

3.1 Procedures to Change Parameters .....................................................14

3.2 Changing DWT ENHANCE. Tab .........................................................17

3.3 Changing DWT DEP Tab ....................................................................22

3.3.1 Changing DWT DEP for High-Density Field ....................................................22

3.3.2 Changing DWT DEP for Low-Density Field .....................................................24

3.4 Changing DWT Noise R. Tab ..............................................................26

4. QA Parameters ..........................................................................27

Notation Conventions

Notation 1

In this manual, the name of button is enclosed with a pair of brackets [ ], and the buttons that are selected in succession

are connected with >to indicate the order.

Example: On the Exposure screen, touch the followings:

[SYSTEM] > [SETUP MENU]

Operation: Touch the SYSTEM button on the first screen, and then touch the SETUP MENU button on

the second screen.

Touch the SYSTEM button (left), and then touch the SETUP MENU button (right)

Notation 2

If any detailed explanation for the operation or setting is available on other page in this manual, the page to refer is indi-

cated with (→page number).

Example: For details of the EFFECT parameter, refer to the step 2 in 2.2 Setting DWT ENHANCE. Tab

(→P.7)

Content: On page 7, detailed description of the EFFECT feature is provided.

Notation 3

When description of the procedure or setting continues from an odd-numbered page (right page) to the subsequent even-

numbered page (left page), a small note, [Continued on the following page »] appears at the bottom-right of the odd-

numbered page to draw your attention.

– 1 –

1. Overview

1.1 About MLT (F)

NOTE: MLT (F) is supported by CXDI System Software Version 4.3 or later.

The CXDI Image Processing Software MLT (F) (called “MLT (F)” in this manual) is

designed to extend the image processing functions provided with the CXDI series of Canon dig-

ital radiography system (called “CXDI” in this manual).

By installing MLT (F) on the Control PC, the advanced image processing features of MLT (F)

are brought into full scope both in the Edit Exposure Mode and QA Mode.

The following examples show the QA Mode screens of CXDI System Software version 6.3.

Standard QA Mode Screen (DEP Tab)

QA Mode Screen Extended by MLT (F) (DWT DEP Tab)

1.Overview

– 2 –

1.2 Available Functions of MLT (F)

This manual describes the operating procedures of the following three image processing func-

tions that are available with MLT (F). For details and information on other image processing

functions, please refer to Operation Manual and Setup Guide.

DWT*1 Edge Enhancement (→P.7)

The DWT ENHANCE. tab provides the function to accentuate edge details of the expo-

sure image by specifying the three parameters; the degree of enhancement (EFFECT),

type of enhancement (FREQUENCY BASE), and type of density dependent of the

image (DENSITY BASE).

DWT DEP*2 (→P.10)

The DWT DEP tab provides the function to compress the dynamic range of the exposure

image by specifying the six parameters; the density to start compression (STARTING

DENSITY), compression ratio (DEP WEIGHT), and intensity of compression (DEP

EFFECT) for both the High-Density Field (HIGH-DENS.) and Low-Density Field

(LOW-DENS.).

The imaging area on film or monitor is widened by decreasing the pixel value range in

the second region of interest, without changing the minute structures in the first region of

interest.

DWT Noise Reduction (→P.13)

The DWT NOISE R. tab provides the function to reduce the noise components of the

exposure image, and improve it’s granularity by specifying the two parameters; the

degree of enhancement (EFFECT) and upper limit of density (PROCESSING UPPER

LIMIT).

NOTE: The effects resulting from changes to the parameters may be difficult to check

in the exposure image of the QA mode screen.

In these cases, check by touching [MAG.] or [QA-MAG.] to display the

enlarged screen.

*1 This is an abbreviation for Discrete Wavelet Transform. This method of image

processing is also called Multi-Frequency Processing.

*2 This is an abbreviation for Display Enhancement Processing. This method of

image processing is also called Dynamic Range Compression Processing.

Display of the Tabs

At the time of installation, the service person can specify the fixed parameters, and set

MLT (F) not to display the tabs for the individual settings of the DWT Edge

Enhancement, DWT DEP and DWT Noise Reduction.

Continued on the following page >>

– 3 –

2. Edit Exposure Mode Settings

The examples used in this chapter are the screens of CXDI System Software version 6.3.

2.1 Procedures to Edit Exposure Mode

1Display the Edit Exposure Mode screen

On the Exposure screen, touch the followings:

[SYSTEM] > [EDIT EXPOSURE MODE].

Edit Exposure Mode Screen

2Select the Sensor Unit

If two or more sensor units are being used in the system, touch the Sensor Unit button,

then select the Sensor Unit.

3Select the Category tab

If eight or more categories are registered in the system, touch the or button to dis-

play the Category tabs that are not currently visible.

Sensor Unit

Button

Category Tab Exposure Mode

2.Edit Exposure Mode Settings

– 4 –

4Select the Exposure Mode

Make sure that [EDIT PARA.] at the top-left is highlighted, and select the desired Expo-

sure Mode.

The EDIT PARA. screen appears.

EDIT PARA. Screen (first page)

5Display the next page

Touch [NEXT PAGE].

EDIT PARA. Screen (second page)

Availability of Frequency Processing Mode

If your CXDI System Software is the version 5.0 or before, there is no need to select

the frequency processing mode as described in the next step (step 6). Skip the step 6

and proceed to the step 7.

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